Structural, conductivity and dielectric properties of europium trioxide doped lead boro-tellurite glasses

•Europium trioxide doped lead boro tellurite glasses were prepared by the conventional melting quenching technique.•The non-crystalline nature of the glasses was confirmed by XRD measurements.•The electrical transport mechanism was well fitted with the Almond-West type of power law.•With increasing temperatures, s (exponential) values have been found to decrease.•The stretched exponent β values were found to be insensitive to the change in temperature. A very rare set of glasses having chemical compositions of B2O3-TeO2-Na2O-PbO, doped with europium trioxide were obtained by the conventional melt quenching procedure. An X-ray diffractometer was run to confirm the non-crystalline nature of the structural studies. The AC conductivity and dielectric properties of glasses were studied in the temperature range 343–483 K with a 40 Hz to 6 MHz frequency range. The Almond–West model of power-law suggests, the well-fitting of found AC conductivity values and conductivity is due to translational motions of carriers. AC conductivity decreases with increasing concentration of Eu2O3. The non-Debye type of relaxations was predicted by AC conductivity plots. The dielectric constant and dielectric loss of complex permittivity was measured and obtained values suggested that the phenomenon of dielectric relaxation is mainly subjected to the frequency-dependent polarization mechanism. The obtained power-law exponent values indicate the AC conductivity mechanism and follow the CBH model.